Turret-head.



No. 853,576. PATENTEB MAY 14, 1907,

' H. H. woamm.

TBBRBT HEAD.

APILIOiTIBH mum 863227, 1905.

a sumsanna? 1.

um to z UNIT ED STATES PATENT OFFICE.

TURHET-HEAD.

Specification of Letters Patent.

Patented May 14, 1907.

Amilioation filed October 2?, 1988; Serial lie. 340,869.

To (1M miwlw if mini- 1 concern:

Be it known that l, l'liunn' ll. \VooAMAN, s. citizen of the UnitedStates, residing at Greenvillr, in the county of Darke, in the State oi()hio. have invented certain new and useful lin )rovcments in Turret-lleads, of which the following is a sprci'l'ioation.

This invention relates to turret heads for drilling machines.

One object of this invention is to improve the clutch connection betweenthe driving spindle and the driven spindles. Heretofore theseconnections have been such that it has been impossible to shift from onedrill to the other without reducing the speed oi rotation of the drivingspindle. in my invention, the. connection is so formed that it isunnecessary to reduce the speed of the driving spindle.

in the drawings, Figure l is a perspective view of my improved device.Fig. 2 is a like view from another side. Fig. 3 is a vertical sectionthrough the driving spindle snd one. of tl'ie'driven spindles. Fig. 4 isa section on line 4 4 Fig. 2, arts being shown in elevation. Figs. 5 an6 are end views of the driving and the driven spindles respectively.

Referring more particularly to the drawings, 1 indicates a bearing piecehaving a longitudinal bore, and a transverse bore leading to thelongitudinal bore. Within the longi tudinal bore is arranged a drivingspindle 2, having an annular groove 3. The transverse bore has mountedtherein a rotatable head shifter 4 provided at its inner end with aneccentric pro ootion 5 extending into the an nular groove. 3. To holdthe rotatable shifter within the transverse bore, said shifter isprovided with an annular groove 5 into which projects ascrew 7. Theshifter is provided at its outer end with a handle 8 and is limited inits movement by a pair of shoulders 9 and 10 on the bearing piece, and aprojection 11 on the shifter.

The bearing lens 1 is further rovided with an oblique y dis osed boss 12aving a central screw-three ed opening 13. This boss serves foranchoring the screw threaded end of a non-rotating spindle 14 whichserves as a bearing for a rotatable head 15. The

1 head 15 is of spider formation and in its arms iournaled a number ofhollow driven spindles l6 any one of which is adapted to axially alincwith the driving spindle. The hollow spindles 16 are each held to thehead by being provided with annular flanges 17 at one end and by acollar 18 at the other end secured to the spindle. The tools 19 aresecured with the hollow spindles 16 in any suitable manner.

So that the driving spindle may be connected to any one of the drivenspindles, the driving; spindle is pro vided with a central centerinpboss 20 having a cylindrical portion and a rounded end and an eccentricprojec tion 31 of less length than the cylindr cal portion 05' thecentering boss, while the hollows of the driven spindles form centralopenings into which the boss may project, an arcuete slot 22 beingprovided in the end of each driven s )indle, concentric with the centralopening or the purpose of reeeivinv the projection 23 on the drivingspindle. lhis connectirm between the driving spindle and the drivenspindle is such that it is possible to establish connection betweenthese parts without reducing the speed of rotation of the drivingspindle.

Having now described my invention, what I claim as new and desire tosecure by Let tiers Patent is:

The combination of a driving spindle having a central boss with acylindrical portion, and an eccentric projection of less length than thecylindrical portion of the boss, a rotstsble head, a plurality ofrotatable spin dies iournaled in the head and each provided with acentral opening and an arcuate slot concentric with the opening, andmeans for shifting the head to cause a. rotatable spindle to beconnected with or disconnected from the driving spindle.

The foregoing specification signed at Greenvilleflhio, this 10 day ofSeptember, 1906.

HARRY H. VVOGAMAN.

In presence of two witnesses OSCAR R. KRIOKENBERGER, JOHN F. MAKER.

